Files is the second major tab when you open a project or a task. It’s the place where you find all documents and external links added to a specific task, arranged in folders, and grouped by different criteria such as name, date, category, and so on.
Files tab in a project
Files tab in a task
Files and external links can be uploaded to a specific task (or attached to a comment), to an activity, or a project .
Note: All files uploaded on a task-level aggregate on the level of the activity to which the task belongs. Similarly, all files uploaded on activity-level aggregate on project-level.
You can upload a single file up to 50MB, and add Google Drive links.